Through Nuget install the Dirkster.AvalonDock 4.5 and its in the reference Here is my xaml code for the mainwindow
<Window x:Class="AvalonDocTestApp.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:AvalonDocTestApp"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<StackPanel Grid.Column="0">
<local:UserControl1/>
</StackPanel>
<Grid Grid.Column="1">
<DockingManager Grid.Row="1" x:Name="dockManager" AllowMixedOrientation="True">
<LayoutRoot>
<LayoutPanel Orientation="Horizontal">
<LayoutAnchorablePaneGroup DockWidth="150">
<LayoutAnchorablePane>
<LayoutAnchorable ContentId="toolWindow1" Title="Tool Window 1" >
<StackPanel>
<TextBox Text="{Binding TestTimer, Mode=OneWay, StringFormat='Tool Window 1 Attached to Timer ->\{0\}'}"/>
</StackPanel>
</LayoutAnchorable>
</LayoutAnchorablePane>
</LayoutAnchorablePaneGroup>
</LayoutPanel>
</LayoutRoot>
</DockingManager>
</Grid>
</Grid>
</Window>
The above code for the LayoutAnchorable section textbox appears without any title and dock combobutton
This issue was found in avalon dock 4.5.51 version in Nu-get installation. When I installed avalon dock 4.0.0 version, the title, dock options start appearing.